Annie Dookhan, a former chemist at the lab, is charged with faking test results, tampering with evidence and routinely ignoring testing protocols, putting thousands of criminal cases in jeopardy.

The Boston Globe (http://b.globe.com/166NeWN ) reports that Adam Davila, who was sentenced in federal court last year to 10 years in prison on heroin charges because he was classified as a career criminal, is asking to be released.

Davila has asked that a federal judge cut his sentence based on the chemist's involvement in one of his state convictions. The 2008 conviction of drug dealing was factored into his classification as a "career criminal" in federal court and was used to triple his sentence.